Replace PerOSThreadSyscall*() with AllThreadsSyscall*().

The latest iteration of the golang patch [*] for supporting a
syscall API that can normalize privilege over the whole runtime
(aka POSIX semantics) has renamed this API. The API also now
drops this functionality when CGO is enabled, but that doesn't
affect libcap because libcap uses libpsx in this build
configuration.

[*] https://go-review.googlesource.com/c/go/+/210639/

Signed-off-by: Andrew G. Morgan <morgan@kernel.org>
3 files changed